Manifold



June 13, 1933.

' cl L. MCCUEN MANIFOLD Filed May 2, 192a Patented-lune 13, 1933 UNITED s'rA'rss PATENT OFFICE.

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i In prior manifold constructions the intake and exhaust manifold have usuall been constructed as ipde ndent' units. 7 n some instances the mta e manifold has been positioned wholly within the exhaust manifold,

the purpose of this construction being to preheat the carburetted mixture prior to its entry into the firing chamber. It is also common practice to provide a heated riser or a hot spot on the intake manifold to give the desired pre-heating.

The present invention is particularly concerned with the construction of combined or interrelated intake and exhaust manifolds and has particular reference to the construction of certain of the arms or ports of the exhaust manifold as an inte ral structural portion of the intake manifo d. In casting the intake manifold, I preferably cast integral therewith between the central delivery' ports a central pair of exhaust arms orports which are connected to and from a part of the exhaust manifold. Both of these exhaust arms or ports are-provided with bai'fles so as to prevent the direct impinging or strikingof the hot exhaust gases against the adjacent portionof the intake manifold. These baffles will forcethe exhaust gases upwardly and away from the intake manifold and tov ward the exhaust manifold.

A central chamber cast integral with the intake manifold surrounds the up r portion of the riser as well as a portion 0 the intake manifold" at the point where the riser joins thereon. The baflles previously referred to,

form one of the walls of this chamber and as the exhaust gases are deflected by the baffles, onl such gases as will in their'natural course ow into the chamber will be allowed to cause a pre-heating of the incoming carburetor fuel. I

combustion engine wi ma. Serial Io. 27am.

Positioned over the intake manifold is the exhaust manifold. The central portion of the exhaust manifold is provided with an opening which 'fits over a corresponding opening at the top of the chamber. This so openin in the exhaust manifold is also ada to take the gases from the exhaust arms -.or ports cast with the intake manifold. Journalled within the exhaust manifold over the opening into the chamber is a valve in the form of a baflle which is capable of being turned so as to cause exhaust gases from a portion of the cylinders of the internal combustion "engine to flow around and toward the hot s t on the intake manifold, 00 making it I ssib e, during cold weather, to supply su cient additional heat to the cold mixture coming from the carburetor, to prepare this mixture for proper distribution in the intake manifold, and proper combustion 66 in the en 'ne. The valve is, rovided externallyo the exhaust manifol' with an operating arm capable of manual control.

The invention is disclosed on the accompan ing drawing: I

lgure 1 is an elevation of the manifolds of the invention as a plied to an internal parts broken away and shown in section.

Figure 2 is a section on the line 2-2 of 75 Fi ure 1.

igure 3 is a section on the line 3'3 of Figure 4 is alan view'of the central portion of the mani olds with parts broken away and shown in section. y

Referring to'the numbered parts on the drawing, the numeral 10 indicates the manifold system as a whole, 12 is the exhaust manifold, and 14 is the intake manifold. The engine to which the invention is applied may be any suitable type of'internal combus tion engine.

The exhaust manifold 12, is provided with Q I fa plurality ofar'ms. or 16, 18. 20,22, 09 a J 24 and 26, while the intake manifold is provided with the plurality of arms or ports, as indicated at 28, 30, 32 and 34, the arms being provided with means to permit of their being secured to the block of the internal combustion engine. k

The engine to which the invention is applied has six cylinders, each cylinder delivering into a single exhaust arm of the exhaust manifold. The intake manifold has the outermost or end arms or ports 28 and 34 and the intermediate or innermost arms or ports 30 and 32. In passing or feeding carburetted fuel from the carburetor throughthe manifold and manifold arms to theengine cylinders, the outermost arm 28 feeds the two cylinders at one end of the engine and the arm 34 feeds the two cylinders at the other end of the engine while each of the inter- I .mediate ports or arms 30 and 32 feeds one cylinder at the middle of the engine.

, By referring to Figures 1 and 4, it will be noted that the two central exhaust arms, or ports 20 and 22 are cast or constructed integral with the intake manifold 14. Both of these ports or arms 20 and 22 are in substantially the same plane as the arms or ports of the intake manifold 14, as is seen from Figures 2 and 3. At the'end of these ports or arms 20 and 22 adjacent the intake manifold 14, bafiles 36 and 38 are provided to deflect the hot exhaust gases away from the hot spot of the intake manifold 14.

This hot spot 40 is positioned centrally of the intake manifold at the point where the manifold joins the riser'42. Surrounding the hot spot 40 is the chamber 44 spacedv from the intake manifold to allow for the circulation of the hot exhaust gases around the hot spot. At its upper portion, the chamber 40 is open as shown at 46. The purpose of the opening being later described. The bafiles 36 and 38 it will be noted form one i of the walls of the chamber 44.

as will be later described. The two mani-;

folds have conformable seats 49 and 51 at the openings 46 and 48 and bolts 53 passing through 46 andf55 secure both manifolds together at their"'" central portions.

Positioned within the exhaust manifold at its central portion is'a valve 50in the form of a baflle. 'The valve has a central stem or axle 52 journalled in bosses 54 and 56, provided on the inside portion of the exhaust manifold 12. The stem 52 extends beyond In the position of the valve 50 shown in Figures 1 and 2, all of the exhaust gas from the ports 22, 24 and 26 will im inge against the valve and be thereby de ected downwardly'against the hot spot 40, to causea heating thereof and a consequent heating of the carburetted fuel passing therethrough. This position corresponds to the extreme colld weather or winter position of the va ve.

. During the summer months, orwhen the weather iswarmer, the valve 50 will be swung at right angles to the position'shown in F igures-1 and 2, or to a osition corresponding to the designation. ummer in Figure 4. In this latter position, the valve 50 will offer substantially no obstruction to the passage of exhaust gases from the arms, or ports 22,

24 and 26, so that during the warmer weather,

only such gases as will in their natural course flow toward the hot spot will cause a preheating of the carburetted fuel.

Intermediate positions of the valve 50 will bring about intermediate degrees of heating between the two extremes.

I claim: I J

1. In a manifold arrangement for an internal combustion en ine, comprising intake and exhaust manifol s, said intake manifold having cast integral therewith two central exhaust ports in the same general plane of the intake manifold, a heating chamber surrounding a portion'of and cast integral with said intake manifold, a bafile in each of said two central ports forming a wall of said chamber and serving-to prevent the direct impinging or striking of the exhaust gases on the portion of the intake manifold within the chamber, an exhaust manifold positioned over and secured to said intake manifold, means at the secured portion of said manifolds for forming communication between the interior of the exhaust manifold, the chamber and the said pair of exhaust ports, said means overlying said bafiles, and means in the exhaustmanifold to control the delivery of exhaust gases to said chamber.

' 2. In a manifold arrangement for an internal combustion engine, comprising an intake and an exhaust manifold, a plurality of ports on each manifold forming a part there'- of, a part of the ports of the exhaust manifold cast or formed intgral with the intake manivfold, the remaining ports of each manifold having no structural interrelation with each other, and means in said part ofthe orts to prevent the direct'imp inging or stri ing of ,part of the portso the intake manifold formmg exhaust ports, a heating chamber-in communication with the exhaust manifold formed 4 around the intake manifold at the meeting place of said art of ports with theintake manifold, and bafile means to prevent the exhaust gases from said part of the ports from im inging or striking directlyagainst said inta e manifold.

4. In a manifold arrstngement for an internal combustion engine, comprising an intake and an exhaust manifold, a plurality of ports forming a art of each manifold, a part of the ports 0 the intake manifold forming exhaust ports, a heating chamber'in communication with the exhaust manifold formed around the intake manifold at the meeting place of said part of ports with the intake manifold, and a' bafile in each port forming said part of the ports to revent the direct impmgmg or strikingof t e exhaust gases on the intake manifold.

-5. In a manifold arrangement for an internal combustion engine, comprising a plurality of separatel constructed but interconnected manifol positioned in different horizontal planes, each manifold having a plurality of'ports for passing. gases from and to the engine, a portion only of the ports of one manifold constructed integrally with a second manifold.

6. In a manifold arrangement for an internal combustion engine, comprising sepeach manifold having relation with each other.

arately constructed but interconnected intake and exhaust manifolds positioned in different horizontal planes, a plurality of ports for passing gases from and to the engine forming a part of each manifold, a part of the ports of one manifold cast or formed integraliwith the other manifold, the remaining ports of no structural inter- 7. In a manifold arrangement for an internal combustion engine, comprlsmg intake and exhaust manifolds positioned in different ternal combustion engine, comprisin separately constructed but interconnecte intake and exhaust manifolds, a lurality-of ports for conducting gases to an from the engine rately constructed but interconnected intake and exhaust manifolds, a'plurali'ty of ports for conducting gases to and from the engine and forming a part of each manifold, the

central ports only of the exhaust manifold cast or formed integral with the intake manifold and interconnected with the exhaust manifold to pass exhaust gas thereto, the remaining ports of each manifold having no structural interrelation with each other.

10. In a manifold arrangement for an internal combustion engine, comprising separately constructed but interconnected intake and exhaust manifolds, a plurality of ports for'conducting gases to and from the engine and forming a part of each manifold, the central ports of said exhaust manifold formed integral with said intake manifold and being juxtaposed and positioned between the central ports of the intake manifold and interconnected with the exhaust manifold to pass exhaust gas thereto, the remaining ports of each manifold having no structural interrelation to each other.

11. In a manifold arrangement for an mternal combustion engine comprising, inde pendently constructed but interconnected intake and exhaust manifolds, a plurality of ports for conducting gas to and from the engine and forming a part of each manifold, the 1 central ports of said exhaust manifold cast integral with said intake manifold and being juxtaposed and positioned between and in the same plane with the central ports of the intake manifold, the remaining ports of each manifold having no structural interrelation with each other.

12. In a manifold arrangement for an internal combustion engine, comprising independently constructed but interconnected intake and exhaust manifolds, a plurality of ports for conducting gas to and from the engine forming a part of each manifold, a

part of the ports of the intake manifold formingexhaust ports only and being connected to the exhaust manifold to pass exhaust gases thereto, and a heating chamber in communication with the exhaust manifold formed around the intake manifold at the meeting place of said part of ports with the intake manifold, said chamber adapted to receive exhaust gases ports at all times.

.13. In a manifold arrangement for an infrom said part of the ternal combustion engine, comprising separately constructed but interconnected in take and exhaust manifolds, a plurality of ports forming a part of each manifold, a part of the ports of the intake manifold form- .ing exhaust ports only and being connected ternal combustion en 'ne, comprising intake and exhaust manifol s, a plurality of ports for conducting gases to and from the engine and forming'a part of each manifold, a part of the ports of the intake manifold forming exhaust ports only and being connected to the exhaust manifold to as exhaust gas thereto, a heating chamber in communication with the exhaust manifold formed around the intake manifold at the meeting plate of said part of ports with the intake manifold, and manually controllable means in said exhaust manifold positively to direct exhaust gases to said chamber.

, 15. In a manifold arrangement for an internal combustion engine, comprising intake and exhaust manifolds, a plurality of ports for conducting gases to and from the'engine and forming a. part'of each manifold, a part of the ports of the intake manifold forming exhaust ports only and being connected to the exhaust manifold to pass exhaust gases thereto, a heating chamber in communication with the exhaust manifold formed around the intake manifold at the meeting place of said parts of ports with the intake manifold, manually controllable means in .said exhaust manifold positively to' direct exhaust gases to I said chamber, and means for holding said first named means in"a given position.

'16. In a manifold arrangement for an internal combustion engine, comprising ,separately constructed but independent. intake and exhaust manifolds, a luralityof ports for conducting gases to an from the enginev forming a giart of each manifold, apart of the ports 0 the intake manifold forming exhaust ports only and being connected to the exhaust manifold to pass exhaust gas there to, a heating chamber in communication with the exhaust manifold formed around the in-. take manifold at the meeting place of said part of ports ,with the intake manifold, and a. valve dplaced transversely of the exhaust manifol over said heating chamber POSi-r tively to direct exhaust gases to the heating chamber.

17. In a manifold arrangement for an internal combustion engine, comprising separately constructed but interconnected intake and exhaust manifolds, a plurality of'ports for conducting gases to and from the enof the ports of the intake manifold forming exhaust ports onl and being connected to the exhaust manifol to pass exhaust gas thereto, and a heating chamber in communication with the exhaust manifold formed around the intake manifold at the meeting place of said part of ports with the intake manifold, said heating chamber formed integral with the intake manifold.

18. In a manifold arrangement for an internal combustion engine, comprising se arately constructed but interconnected inta e and exhaust manifolds, a plurality of ports for conducting gas to and from the engine forming apart of each manifold, a part of the ports of the intake manifold forming exhaust ports only and being connected to the exhaust manifold to pass exhaust gas thereto, and a heating chamber in communication with the exhaust manifold formed around the intake manifold at the meeting place of said part of ports with the intake manifold, said exhaust manifold positioned over and secured to said intake manifold and provided with an opening at its secured portion affording communication between said exhaust manifold'and said part of the ports.

19, In a manifold arrangement for an internal combustion engine, comprising separately constructed but interconnected intake and exhaust manifolds, a plurality of ports for conducting gases to and from the engine forming a part of each manifold, a part of I secured to said intake manifold and provided with an opening at its secured portion affording communication between said exhaust manifold and said chamber and'said part of the ports gine forming a part of each manifold, a part 7 20. In a manifold arrangement for internal combustion engines, comprising separately constructed but interconnected intake and exhaust manifolds positioned in spaced horizontal planes, a plurality of ports for conducting gases to and from the engine and forming a part of each manifold, a part of the ports of the intake manifold forming exhaust porm only, said manifolds interconnected at the said part of ports to cause all iflhiadexhaust gas to enter the exhaust mani- 21; In a manifold arrangement for internal combustion engines, comprisin separately constructed but interconnecte intake and exhaust manifolds positioned in spaced horizontal planes, av plurality of ports for conducting gases to and from the engine and forming part of each manifold, a part of the ports of the intake manifold forming exhaust ports only, said manifolds interconnected at the said part of ports to cause all the exhaust gas to enter the exhaust manifold and a heating jacket integral with the intali ceivin heat from the exhaust gases of said part 0 ports.

In testimony whereof I afiix m signature.

CHARLES L. oOUEN.

e manifold at said part of ports and re- 

